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500764-03-4

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500764-03-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 500764-03-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,7,6 and 4 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 500764-03:
(8*5)+(7*0)+(6*0)+(5*7)+(4*6)+(3*4)+(2*0)+(1*3)=114
114 % 10 = 4
So 500764-03-4 is a valid CAS Registry Number.

500764-03-4Relevant articles and documents

Loxoprofen sodium and preparation method of intermediate of loxoprofen sodium

-

, (2017/09/29)

The invention relates to the technical field of organic synthesis and in particular relates to loxoprofen sodium and a preparation method of an intermediate of the loxoprofen sodium. The invention provides a compound with a structure shown as a formula A: the formula A is shown in the description, wherein R and R are independently selected from methyl or ethyl or can be subjected to cyclic synthesis to form a formula shown in the description respectively, wherein n is 1 or 2; Y is X or a formula shown in the description, wherein X is Cl or Br and R is methyl or ethyl.

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